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    • 6. 发明申请
    • Compositions and Methods for Delivery of MicroRNA to Cells
    • 将微RNA转运至细胞的组合物和方法
    • US20140128451A1
    • 2014-05-08
    • US14059027
    • 2013-10-21
    • Preethi H GunaratneLalithya C SinghMatthew L Anderson
    • Preethi H GunaratneLalithya C SinghMatthew L Anderson
    • A61K31/7105A61K47/48
    • A61K31/7105A61K31/282A61K31/519A61K33/00A61K47/6923A61K47/6929B82Y5/00C12N15/111C12N2310/141C12N2320/32Y02A50/395A61K2300/00
    • Provided herein are gold nanoparticles mediated non-viral delivery of miRNAs, siRNAs, genes and drugs. Nanoparticle platforms and combinatorial drug delivery vehicles comprises gold nanoparticles with a plurality of thilolated hyperbranched dendrons conjugated to the nanoparticle surface. The thiolated hyperbranched dendrons comprise chemically-modifiable surface groups, functionalized interior groups and nano-cavities within the hyperbranched structure to which a variety of payload molecules may be conjugated, optionally via a linker. Payload molecules may comprise nucleic acids, anticancer drugs and small molecule inhibitors, optionally with, non-cytotoxic signaling agents, for example, fluoroscein isothiocyanate. Successful manipulation of the degree of PEGylation and the amount of gold nanoparticles in a polyelectrolyte complex to evaluate the best formulation for highest payload delivery of chemically unmodified miRNA duplexes and stemloops is presented. Also provided are methods for delivering one or more therapeutic agents to a cell or tissue or for treating a pathophysiological condition in a subject by delivering the combinatorial drug delivery vehicles to a cell or tissue associated with the pathophysiological condition to facilitate internalization of the vehicle to effect treatment.
    • 本文提供金纳米颗粒介导的miRNA,siRNA,基因和药物的非病毒递送。 纳米颗粒平台和组合药物递送载体包含金纳米颗粒,其具有与纳米颗粒表面缀合的多个噻唑化的超分支树突。 硫醇化的超支化树突包含可超过分支结构的化学修饰的表面基团,官能化的内部基团和纳米空穴,可任选地通过连接体将各种有效载荷分子缀合到其上。 有效载荷分子可以包含核酸,抗癌药物和小分子抑制剂,任选地含有非细胞毒性信号传导剂,例如异硫氰酸荧光素。 提出了聚乙二醇化程度的成功操作和聚电解质复合物中金纳米颗粒的量,以评估化学未修饰的miRNA双链体和茎突的最高有效载荷的最佳配方。 还提供了将一种或多种治疗剂递送至细胞或组织或通过将组合药物递送载体递送至与病理生理条件相关联的细胞或组织来治疗受试者的病理生理状况的方法,以促进载体的内化 治疗。